OleObject.SetEmbeddedObject

SetEmbeddedObject(bool, byte[], string, bool, string)

Sets embedded object data.

public void SetEmbeddedObject(bool linkToFile, byte[] objectData, string sourceFileName, 
    bool displayAsIcon, string label)

Parameter	Type	Description
linkToFile	Boolean	Indicates whether the object links to the file. If true, the parameter objectData is ignored.
objectData	Byte[]	The embedded object data.
sourceFileName	String	The file name.
displayAsIcon	Boolean	Indicates whether diplaying object as an icon. If true, the orginal image data will be covered by icon.
label	String	The icon label. Only works when displayAsIcon as true.

Sets embedded object data.

public void SetEmbeddedObject(bool linkToFile, byte[] objectData, string sourceFileName, 
    bool displayAsIcon, string label, bool updateIcon)

Parameter	Type	Description
linkToFile	Boolean	Indicates whether the object links to the file. If true, the parameter objectData is ignored.
objectData	Byte[]	The embedded object data.
sourceFileName	String	The file name.
displayAsIcon	Boolean	Indicates whether diplaying object as an icon. If true, the orginal image data will be covered by icon.
label	String	The icon label. Only works when displayAsIcon as true.
updateIcon	Boolean	Indicates whether automatically updating icon.

As Aspose can update embedd all file icons, so it’s better that you can add correct icon with updateIcon as false.